Transparency makes it possible to create
nonrectangular images for the web. Background transparency preserves
transparent pixels in the image. This allows the background of the
web page to show through the transparent areas of your image. Background
matting simulates transparency by filling or blending transparent
pixels with a matte color that can match the web page background. Background
matting works best if the web page background is a solid color and if
you know what that color is.
Use the Transparency and Matte
options in the Save For Web & Devices dialog box to specify
how transparent pixels in GIF and PNG images are optimized.
(GIF and PNG‑8) To make fully transparent
pixels transparent and blend partially transparent pixels with a color,
select Transparency and select a matte color.
To fill fully transparent pixels with a color and blend
partially transparent pixels with the same color, select
a matte color and deselect Transparency.
(GIF and PNG‑8) To make all pixels with greater than
50% transparency fully transparent and all pixels with 50% or less
transparency fully opaque, select Transparency and select None from
the Matte menu.
(PNG‑24) To save an image with multilevel transparency
(up to 256 levels), select Transparency. The Matte option is disabled
since multilevel transparency allows an image to blend with any
background color.
Note: In browsers that do not support PNG‑24 transparency,
transparent pixels may be displayed against a default background
color, such as gray.
To select a matte color, click the Matte color swatch
and select a color in the color picker. Alternatively, select an
option from the Matte menu: Eyedropper (to use the color in the
eyedropper sample box), Foreground Color, Background Color, White,
Black, or Other (to use the color picker).
Comments
Comments are no longer accepted for Photoshop CS3. Photoshop CS4 is the current version. To
discuss Photoshop CS3, please use the Adobe forum.
Comments
Comments are no longer accepted for Photoshop CS3. Photoshop CS4 is the current version. To discuss Photoshop CS3, please use the Adobe forum.